Tree grate



FIG. 1 is a top perspective view of a tree grate showing my new design;

FIG. 2 is a top plan view of a second embodiment thereof;

FIG. 3 is a side elevational view of the embodiment in FIG. 2;

FIG. 4 is a top plan view of a third embodiment thereof;

FIG. 5 is a side elevational view of the embodiment in FIG. 4;

FIG. 6 is a top plan view of a fourth embodiment thereof; and

FIG. 7 is a side elevational view of the embodiment in FIG. 6. 

The ornamental design for a tree grate, substantially as shown and described. 